Good to go out of the box if you use the pre-animated .svgs. For further customization you will need latest versions of Keyshape and Sketch app.

Animated SVGs

Animated Icons

Enhance your website with these totally free animated SVG icons. Collection is still small but I will be adding new ones from time to time.

Uses KeyshapeJS Animation which is the safest way to export SVG animations as they play on all modern web browsers. It uses a piece of JavaScript code, which animates the SVG document, so that all modern web browsers display the animation correctly.